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Non-equilibrium effects in a turbulent boundary layer due to the destruction of large eddies

  • K. S. Yajnik
  • M. Acharya
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 75)

Abstract

A passive device was introduced in a turbulent boundary layer to destroy its large scale structure. Investigation revealed a marked increase in Clauser shape factor and decrease in skin friction. Relaxation characteristics as the boundary layer returns to equilibrium are discussed in the paper.

Keywords

Test Section Skin Friction Turbulent Boundary Layer Momentum Thickness Turbulent Shear Flow 
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References

  1. 1.
    Kline, S.J.; Morkovin, M.V.; Sovran, G.; Cockrell, D.J.; Editors: Computation of turbulent boundary layer — 1968. AFOSR-IFP-Stanford Conference Proceedings, Vol. 1, p. 483, (1968)Google Scholar
  2. 2.
    Roshko, A.: Structure of turbulent shear flows:A new look. AIAA J., Vol. 14, No. 10, p. 349, (1976).Google Scholar
  3. 3.
    Subbaiah, M.V.; Yajnik, K.S.: NAL Boundary layer tunnel, NAL Report BL-1 (1977).Google Scholar
  4. 4.
    Bradshaw, P.: A simple method for determining turbulent skin friction from velocity profiles. J. Aero Space Sci., V. 26, p. 841 (1959).Google Scholar
  5. 5.
    Coles, D.E.; Hirst, E.A.: Computation of turbulent boundary layer-1968. AFOSR-IFP-Stanford Conference Proceedings, Vol. II, (1968).Google Scholar

Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • K. S. Yajnik
    • 1
  • M. Acharya
    • 1
  1. 1.National Aeronautical LaboratoryBangaloreIndia

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